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Finding the Fourth Proportional to 18,751.15, 25,876.47 and 10,367.65

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Solution

The fourth proportional to 18,751.15, 25,876.47 and 10,367.65 is: 14,307.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.15 : 25,876.47 = 10,367.65 : x
  2. Step 2: Convert to fraction form
    18,751.15/25,876.47 = 10,367.65/x
  3. Step 3: Cross multiply
    18,751.15x = 25,876.47 × 10,367.65
  4. Step 4: Simplify right side
    18,751.15x = 268,278,184.20
  5. Step 5: Solve for x
    x = 268,278,184.20/18,751.15
  6. Step 6: Final answer
    x = 14,307.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.